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What is pip's equivalent of `npm install package --save-dev`?
...Best way is to pip install package && pip freeze > requirements.txt
You can see all the available options on their documentation page.
If it really bothers you, it wouldn't be too difficult to write a custom bash script (pips) that takes a -s argument and freezes to your requirements.tx...
How do I execute a program from Python? os.system fails due to spaces in path
...port subprocess
subprocess.call(['C:\\Temp\\a b c\\Notepad.exe', 'C:\\test.txt'])
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Easiest way to read from and write to files
...iting a text file:
using(StreamWriter writetext = new StreamWriter("write.txt"))
{
writetext.WriteLine("writing in text file");
}
Reading a text file:
using(StreamReader readtext = new StreamReader("readme.txt"))
{
string readText = readtext.ReadLine();
}
Notes:
You can use readtext.D...
Select random lines from a file
...d it in 0.047 seconds
$ time ./powershuf.py -n 10 --file lines_78000000000.txt > /dev/null
./powershuf.py -n 10 --file lines_78000000000.txt > /dev/null 0.02s user 0.01s system 80% cpu 0.047 total
The reason it is so fast, well I don't read the whole file and just move the file pointer 10 ...
How to use OpenSSL to encrypt/decrypt files?
...ing like age instead.
Encrypt:
openssl aes-256-cbc -a -salt -in secrets.txt -out secrets.txt.enc
Decrypt:
openssl aes-256-cbc -d -a -in secrets.txt.enc -out secrets.txt.new
More details on the various flags
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sed or awk: delete n lines following a pattern
...attern (including the line with the pattern):
sed -e '/pattern/,+5d' file.txt
To delete 5 lines after a pattern (excluding the line with the pattern):
sed -e '/pattern/{n;N;N;N;N;d}' file.txt
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数据存储组件 · App Inventor 2 中文网
...文件名 前加上 / 来读取SD 卡上的特定文件（例如，/myFile.txt 将读取该文件 /sdcard/myFile.txt）。
读取应用程序打包的资源（也适用于AI伴侣)，文件名 以 //（两个斜杠）开始。
如果一个文件名 不以 / 开头，打包的应用程序...
How do I use the lines of a file as arguments of a command?
Say, I have a file foo.txt specifying N arguments
10 Answers
10
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How to copy a file from one directory to another using PHP?
...You can copy and past this will help you
<?php
$file = '/test1/example.txt';
$newfile = '/test2/example.txt';
if(!copy($file,$newfile)){
echo "failed to copy $file";
}
else{
echo "copied $file into $newfile\n";
}
?>
...
How to create and write to a txt file using VBA
...extToFile()
Dim filePath As String
filePath = "C:\temp\MyTestFile.txt"
' The advantage of correctly typing fso as FileSystemObject is to make autocompletion
' (Intellisense) work, which helps you avoid typos and lets you discover other useful
' methods of the FileSystemObject
...